CN1596145A - A cleaning efficiency testing method and apparatus for a filter in a filtering system - Google Patents
A cleaning efficiency testing method and apparatus for a filter in a filtering system Download PDFInfo
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- CN1596145A CN1596145A CNA028236955A CN02823695A CN1596145A CN 1596145 A CN1596145 A CN 1596145A CN A028236955 A CNA028236955 A CN A028236955A CN 02823695 A CN02823695 A CN 02823695A CN 1596145 A CN1596145 A CN 1596145A
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- cleaning procedure
- pressure
- filtration system
- decay
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- 238000004140 cleaning Methods 0.000 title claims abstract description 84
- 238000001914 filtration Methods 0.000 title claims abstract description 36
- 238000012360 testing method Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 210000000481 breast Anatomy 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 7
- 235000020183 skimmed milk Nutrition 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 239000011148 porous material Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 14
- 239000000839 emulsion Substances 0.000 description 13
- 230000015654 memory Effects 0.000 description 8
- 238000005259 measurement Methods 0.000 description 4
- 239000012465 retentate Substances 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000001471 micro-filtration Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/143—Filter condition indicators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/04—Controlling the filtration
- B01D37/046—Controlling the filtration by pressure measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/20—Accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/10—Testing of membranes or membrane apparatus; Detecting or repairing leaks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/14—Pressure control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/162—Use of acids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/164—Use of bases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/28—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling by soaking or impregnating
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Dairy Products (AREA)
Abstract
A method and an apparatus are provided for testing the efficiency of a cleaning procedure for a filter in a filtering system. After the cleaning procedure (21) of the filter, the filter pores contain a fluid (22). The system is pressurized (23), and a decay in pressure over a predetermined time period is measured (24). Based on the pressure decay, it is determined whether or not the cleaning procedure has been effective (25); a pressure decay smaller than a predetermined threshold value indicates that the cleaning procedure has not been effective.
Description
Technical field
The present invention relates to be used for to test a kind of method and a kind of equipment of efficient of cleaning procedure of the filter of a filtration system.
Background technology
Aseptic breast is meant the emulsion of the microorganism that can not grow under storage condition commonly used.The microfiltration method is to be used to one of several different methods of producing aseptic breast.WO98/57549 and US5256437 explanation utilize the microfiltration method to produce the method for aseptic breast.According to these methods, emulsion is through a filter that only can pass through less than the particulate of a specific dimensions.This means that for example harmful microorganism is filtered off.The filter that uses in the microfiltration method is often made by ceramic material.
In the process of producing aseptic breast by this way, this filter need clean after certain hour.Usually, this system can not enter wash phase in the middle of the production cycle; This situation only just takes place when surpassing a specific threshold by the required pressure of a constant basis of this filter keeping.Along with the hole of this filter becomes more and more dirtier (particulate that is promptly filtered out from this emulsion blocks), this pressure increases in the production cycle gradually.
This cleaning procedure is commonly referred to CIP (on the spot clean) and washes this system by the water that utilization is added with cleaning agent and carry out.A problem of Fa Shenging is this cleaning failure sometimes; Its reason may for example be that the opening of valve in somewhere in the system broken down.When this filter did not also clean before a production cycle begins fully, this cycle shortened, and is too fast because above-mentioned pressure increases.This can cause the product loss, because this system has to enter this wash phase quickly than the time of being calculated.
For fear of this situation, expect that whether some be used to test this cleaning successful method before entering a production cycle.
Summary of the invention
The object of the present invention is to provide a kind of solution at the problems referred to above.This purpose realizes that by a kind of method of efficient of cleaning procedure of a filter that is used for testing a filtration system wherein, this filter is provided with porose, and this method comprises the steps:
Execution is used for this cleaning procedure of this filter;
This filter is got wet;
Give this filtration system pressurization;
On a predetermined time interval, measure the pressure decay in this filtration system; With
Determine based on this pressure decay whether this cleaning procedure is effective, wherein, still not yet in effect less than this cleaning procedure of pressure decay expression of a reservation threshold.
In a preferred embodiment, this filter is used in one and is used for producing the system that aseptic breast is preferably skimmed milk, and this cleaning procedure is a kind of (CIP) program of cleaning on the spot, wherein utilizes a fluid to clean this filter.When this cleaning procedure finishes, discharge this fluid from this filtration system, utilize this fluid to soak/soak into the hole of this filter.This fluid is water preferably but not necessarily.
Advantageously, when finding that this cleaning procedure is not yet in effect, carry out an additional cleaning procedure that is used for this filter.
Above-mentioned purpose also is used to test the equipment of efficient that is used for the cleaning procedure of a filtration system by a kind of, and this filtration system comprises that one has the filter in hole.This equipment comprises the filter pressue device; Be positioned to be used for measuring a pressure sensor of the pressure in this filtration system; With a controller that functionally links to each other with this filter pressue device and this pressure sensor.After this this cleaning procedure of filtration system process, this filter pressue device of this controller actuating is being so that producing a pressure, monitoring the output of this pressure sensor so that determine the decay of the pressure on this filter in a scheduled time on this filter, and a qualitative result who estimates this cleaning procedure by the pressure decay that relatively should determine and predetermined reference data.
Advantageously, this filter pressue device comprises a gas supply device that links to each other with this filter, and first valve and second valve that are positioned at this filter inlet side and outlet side respectively; Wherein this pressure sensor is positioned between these valves, and wherein this controller be suitable for making this gas supply device to this filter supply gas and close this first valve and second valve so that on this filter, produce pressure.
And, preferably indicate this cleaning procedure whether effective by the qualitative results of this controller estimation.Under this cleaning procedure situation still not yet in effect, this controller can be suitable for starting an additional cleaning procedure that is used for this filtration system.
Method and apparatus according to the invention provides and reduces the advantage of producing interference volume, because the present invention reduces the danger that the premature interruption one of having to is produced the cycle significantly.And then realize a kind of more cost-effective production.
From the following detailed description with reference to subsidiary patent claims and accompanying drawing of a preferred embodiment, other purpose of the present invention, feature and advantage will become clear.
Description of drawings
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described in more detail, wherein:
Fig. 1 is the schematic diagram that comprises according to a filtration system of equipment of the present invention;
Fig. 2 is the flow chart that method of the present invention is shown;
Fig. 3 and Fig. 4 are the charts that uses the test result that is obtained during the present invention in a filtration system.
The specific embodiment
Filtration system among Fig. 1 comprises a filter 1, a container 2, a supply pump 3 and a circulating pump 4.Leading to filter 1 and having two valve 7a, 7b from the pipe 5,6 that filter 1 is drawn.One testing equipment that will describe in detail hereinafter 8 links to each other with this system, shown in 9a, 9b.From container 2 through managing 5 fluids that enter filter 1 separated into two parts the time through this filter, a part is in the outflow of P place, and another part flows out at the R place.Two pressure sensors 10,11 are arranged in this system, lay respectively at two sides of this filter.
This filtration system of Fig. 1 is particularly suitable for the processing of defatted milk; But the emulsion of other type also can.
When this system was used for to the emulsion sterilization, container 2 accommodated by supply pump 3 through managing 5 emulsions that are supplied to filter 1.The part that only comprises the particulate that enough passes through filter 1 of this emulsion flows out in order to possible further processing at the P place.This part is called passes thing (permeate).Another part flows out at the R place, and rest parts enters recirculation in order to further to handle by filter 1 through managing 6.The part that flows out at the R place of this emulsion is called retention (retentate).Circulating pump 4 helps emulsion to pass through the recirculation of filter 1.
The pressure at P place is measured by pressure sensor 10, and the pressure at R place is measured by pressure sensor 11.This pressure that is called as TMP (transmembrane pressure Trans Membrane Pressure) that acts on this filter is calculated by a TMP watch-dog 12 as the difference between these two pressure.This TMP should not surpass a specific threshold during a production cycle.If surpass this value, represent that then the hole of this filter is seriously blocked, wherein, this production cycle will be interrupted by TMP watch-dog 12.Thereby the residue emulsion in this cycle in the container 2 can not be processed.
This system is utilized a kind of CIP (cleaning on the spot) program and cleans.When this system was in a wash phase, container 2 was full of a kind of suitable cleaning fluid.By this system, therefore carry out one is used for the cleaning procedure of this system to this cleaning fluid in the mode identical with this emulsion, and especially removes the dirt (foulant) in the hole of this filter.In the preferred embodiment, this cleaning procedure comprises the following steps:
At first, utilize water to wash this system so that remove any residual emulsion.
Then, utilize an alkaline fluids for example NaOH or potassium hydroxide clean this system, simultaneously, add surfactant possibly.Then, utilize water to wash this system once more.
Afterwards, utilize an acidic fluid for example nitric acid wash this system.At last, utilize this system of water rinse.
But itself does not constitute major part of the present invention this cleaning procedure, and can also carry out this cleaning procedure by alternate manner except that above-mentioned.
After this wash phase, the testing equipment 8 by Fig. 1 is according to method testing filters 1 shown in Figure 2.Testing equipment 8 comprises a gas source (gas supply device) 14 that links to each other with the retentate side R of filter 1, preferably a compressed air source (compressed air supply system).One pressure sensor 13 is positioned to measure the pressure at above-mentioned retentate side R place.One controller 15 not only functionally links to each other with pressure sensor 13 with compressed air source 14, and links to each other with the first valve 7a at this filter 1 entrance side place and the second valve 7b at this retentate side place.Controller 15 has an optional operator interface therewith 16, and this operator interface therewith for example comprises a CRT or LCD monitor, one group of indicator lamp or LED, a printer or plotter, a keyboard, a mouse, a control stick or the like.
Controller 15 also has a memory 17, for example a read/writable memory device (RAM, SRAM etc.), a read-only storage (ROM, PROM, EPROM, EEPROM), a permanent memory (disk or CD etc.), perhaps any combination of these memories.This controller itself can be easily by any commercially available microprocessor (CPU) or other programmable logic device for example a FPGA carry out together with the program code that is stored in memory 17.Perhaps, controller 15 can be used as an integrated circuit, as discrete logic gate together with other analog-digital element, perhaps any combination of foregoing realizes.
With reference to Fig. 2, filter according to the preferred embodiment cleans cleaning procedure 21 beginnings of method of testing 20 with reality, in this cleaning procedure 21, comprises that this filtration system of filter 1 is utilized to clean from the fluid of container 2, and last, this filtration system is utilized the water flushing.In step 22 subsequently, from this filtration system discharge water, feasible hole with this filter 1 of water-soaked.Then, in step 23, controller 15 makes compressed air source 14 supply air by pipe 9a, 9b to filter 1.And controller 15 activates two valve 7a, 7b so that they are in closed condition, wherein, and the remainder of filter 1 relative this system sealing and therefore pressurized.One exemplary filter type can for example be pressurized to about 1600mbar; But this value can between the different application and especially between different filter types, change bigger.
Along with the past of time, air will spread by the hole of this filter, and this pressure will correspondingly reduce.If this hole is blocked owing to cleaning deficiently, then this pressure will only have very little decay, because the diffusion of air by the hole of this filter will reduce.Therefore, this shows that this filter is not thoroughly cleaned.Thereby a pressure attenuation measurement step 24 starts by an internal timer of resetting in the controller 15.The instantaneous output valve that one initial pressure value is used as from pressure sensor 13 obtains.In case this timer indication is through a predetermined time interval, controller 15 just reads the instantaneous output valve from pressure sensor 13 again, and wherein, the value of this predetermined time interval can be stored in the memory 17 easily and can for example be 120 seconds.Fall into a trap at controller 15 then and can be regarded as this pressure decay for from the difference between two instantaneous output valves of pressure sensor 13.
In step 25, pressure decay of being calculated and a reservation threshold that also can be stored in the memory 17 are compared.If the pressure decay that should calculate is greater than (perhaps, in theory, equaling) this reservation threshold, then controller 15 thinks that this decay is normal and expression cleaning procedure 21 is effective.This execution proceeds to final step 28, and in this step, by opening valve 7a, 7b, surplus air is discharged from this filtration system, and a new production cycle begins.On the other hand, if the pressure that should calculate decay then enters step 26 in fact less than this reservation threshold, in step 26, by operator interface therewith 16 alert operator cleaning procedures, 21 failures or cleaning procedure 21 is insufficient at least.The cleaning that the operator can duplication filter 1 then is as represented with 27 in Fig. 2.Perhaps, but additional cleaning procedure 27 controlled devices 15 start automatically.
Additional cleaning procedure 27 can be carried out by different way.In the preferred embodiment, additional cleaning procedure 27 is realized by repeating whole (CIP) program 21 of normally cleaning on the spot.
Perhaps, additional cleaning procedure 27 also can comprise identical with normal CIP program 21 but have the short or step of the duration of length.
As an other possibility, in additional cleaning procedure 27, only carry out some step of CIP 21.
According to another possibility, compare with normal CIP 21, during additional cleaning procedure 27, the concentration of this acidic cleaning solution and this alkaline cleaning fluid is higher or lower respectively.
A possibility is to carry out an extra step in additional cleaning procedure 27 again, for example comprises and uses a kind of enzyme-added cleaning fluid.
Testing equipment 8 can advantageously be used a commercially available integrity test equipment, this integrity test equipment for example is from Pall Process Filtration Limited, Europa House, Havant Street, Portsmouth PO1 3PD, the PALLTRONIC FFE04 of England.Up to now, this integrity test equipment only has been used to check the integrality of this filter cell, promptly do not exist in this filter allow big particulate by this filter from and can cause a kind of crack or other defective of non-sterile goods.On the contrary, the present invention can use the cleaning efficiency of this testing of equipment filter advantageously novelly, rather than the integrality of filter.What be worth emphasizing is that except above-mentioned integrity test equipment, testing equipment 8 also can realize by other device.
It is the example how to change that Fig. 3 is illustrated in the particular filter system this pressure decay.This system in each test case 59 to 71 after a production cycle through a cleaning procedure.Then this system is forced into about 1600mbar, and measures 120 seconds pressure decay.In most of examples, this pressure decay is approximately 50 to 60mbar, but in test case 62 and 63, this pressure decay is very low, is about 10 to 30mbar.These two (example) tests are to carry out after insufficient cleaning of this filter.
Improvement referring now to the embodiment shown in Fig. 4 key diagram 1 to 3, Fig. 4 is illustrated in normal condition (promptly, when this filter cleans when being considered to effective step 28 among contrast Fig. 2) following filter cleans the long-time variation that this pressure of recording during the step 24 of test program 20 is decayed.
The chart of Fig. 4 is illustrated in during a large amount of production/cleaning frequency in the step 24 of Fig. 2 a series of pressure decay sample values to a particular filter systematic survey.As shown in Figure 4, after filter 1 (Fig. 1) is installed in this system, this pressure decay substantially constant (about 58mbar) of during initial several production/cleaning frequencies, in the step 24 of Fig. 2, measuring.Then, each pressure pad value of measuring in step 24 begins the rate fluctuation slowly to reduce on this whole production/cleaning frequency.At last, after a large amount of production/cleaning frequency (for example in Fig. 4, being approximately No.75), the quantity of the normal pressure pad value of measuring in the step 24 of Fig. 2 only is about 40mbar, promptly be markedly inferior to this initial value of measuring during initial several cycles, this initial value is a shade below 60mbar.The long-time variation of in the normal pressure pad value this mainly is owing in fact do not have the fact of cleaning procedure absolute ideal to cause (this normal pressure pad value that the emulsion residue will be retained in the filter 1 and cumulative effect is measured in the step 24 of Fig. 2 that means trace).
For handle above-mentioned situation and avoid making in the normal pressure decay reduce for a long time with similar Fig. 3 in test No.62 and 63 abnormal pressure decay (cleaning procedure of expression one failure) obscure, clean test controller 15 and be suitable for when filter 1 is installed in this filtration system at first, carrying out the attenuation measurement of series of standards pressure.One reference value that is used for the normal pressure decay draws and is stored in the memory 17 from this serial canonical measure.And, one second reference value calculates and also is stored in the memory 17 from this first reference value, this second reference value is represented a limit, when being lower than this limit, and reducing for a long time in the normal pressure decay owing to there being the danger of obscuring with abnormal pressure decay to be considered to unacceptable.
For example, in the example of Fig. 4, this second reference value can be set at 40mbar, mean that cleaning test controller 15 will notify in the step 24 of Fig. 2 this pressure of measurement to decay to be lower than this limit accepted that is limited by this second reference value now at productions/cleaning frequency No.75 place, and thereby requirement take measures (action).This measure can for example be step 26 and the 27 similarly additional cleaning procedures that clean among test controller 15 orders one and above-mentioned Fig. 2.This additional cleaning procedure will make this normal pressure pad value revert to this first reference value (this initial pressure pad value that promptly calculates) from this canonical measure, perhaps be one with the approaching value of this first reference value.In other words, this reference value that is used for the normal pressure decay as test in the step 25 of Fig. 2 is reset to its initial value of determining after filter 1 is installed in this filtration system.As a possibility, except or replace should additional cleaning procedure, clean test controller 15 and can carry out one group of new canonical measure, so that compensate above-mentioned long duration of action.
Mainly the invention has been described with reference to a preferred embodiment.But except a top disclosed embodiment, other embodiment in the scope of the invention that is limited by subsidiary patent claims equally also is feasible.Especially, the exact value of the pressurization of filter 1, this pressure attenuation measurement time and this pressure decay threshold values all will be adjusted to adapt to the applied environment of a reality, and this is easy to realize concerning those skilled in the art.
Claims (14)
1. the method for the efficient of the cleaning procedure of a filter (1) that is used for testing being used for a filtration system, described filter is provided with porose, and this method comprises the steps:
Execution is used for the described cleaning procedure (21) of described filter;
Described filter (1) is got wet;
To described filtration system pressurization (23);
On a predetermined time interval, measure the pressure decay (24) in the described filtration system; With
Determine based on described pressure decay whether described cleaning procedure is effective, wherein, less than the pressure decay expression described cleaning procedure (25) still not yet in effect of a reservation threshold.
2. method according to claim 1, it is characterized in that, described cleaning procedure is included in and uses a kind of fluid in the described filtration system, and when described cleaning procedure is finished, utilize the hole that described fluid soaks described filter to carry out the step that described filter (1) is got wet simultaneously by discharge described fluid from described filtration system.
3. according to claim 1,2 or 3 described methods, it is characterized in that described fluid comprises water.
4. according to claim 1,2 or 3 described methods, it is characterized in that described cleaning procedure (21) is a kind of (CIP) program of cleaning on the spot.
5. each described method in requiring according to aforesaid right is characterized in that described filter (1) is used in one and is used for producing the system that aseptic breast is preferably skimmed milk.
6. each described method in requiring according to aforesaid right is characterized in that, this method also is included in described cleaning procedure and is confirmed as carrying out when still not yet in effect a step (27) that is used for the additional cleaning procedure of described filter (1).
7. one kind is used to test the equipment of efficient that is used for the cleaning procedure of a filtration system, and described filtration system comprises that one has the filter (1) in hole, it is characterized in that,
Filter pressue device (7a, 7b, 14);
Be positioned to be used for measuring a pressure sensor (13) of the pressure in the described filtration system; With
A controller (15) that functionally links to each other with described filter pressue device and described pressure sensor;
Wherein, described controller be suitable for described filtration system through activating described filter pressue device after the described cleaning procedure so that in the output that produces a pressure, the described pressure sensor of monitoring on the described filter so that determine the decay of the pressure on the described filter in a scheduled time, and decay and the predetermined reference data are estimated a qualitative result of described cleaning procedure by more described definite pressure.
8. equipment according to claim 7 is characterized in that, described filtration system comprises that also one is used for supplying with by described filter (1) fluid container (2) of a fluid during described cleaning procedure; And described controller (15) is suitable for discharging described fluid from described filter when described cleaning procedure is finished and utilizes described fluid that the hole of described filter is soaked simultaneously.
9. according to claim 7 or 8 described equipment, it is characterized in that, described filter pressue device (7a, 7b, 14) comprises a gas supply device (14) that links to each other with described filter (1), and first valve and second valve (7a, 7b) that are positioned at described filter inlet side and outlet side respectively; And described controller (15) be suitable for making described gas supply device to described filter supply gas and close described first valve and second valve so that on described filter, produce described pressure.
10. according to each described equipment in the claim 7 to 9, it is characterized in that described pressure sensor (13) is positioned between described first valve and described second valve (7a, 7b).
11., it is characterized in that described filtration system is included in one and is used for producing the system that aseptic breast is preferably skimmed milk according to each described equipment in the claim 7 to 10.
12. according to each described equipment in the claim 7 to 11, it is characterized in that, indicate described cleaning procedure whether effective by the described qualitative results of described controller (15) estimation.
13., it is characterized in that described controller (15) is suitable for when the qualitative results of described estimation indicates described cleaning procedure still not yet in effect starting an additional cleaning procedure that is used for described filtration system according to each described equipment in the claim 7 to 12.
14. according to each described equipment in the claim 7 to 13, it is characterized in that, the described pressure that is produced on described filter by described filter pressue device (14) is about 1600mbar, the described scheduled time is about 120 seconds, and described filter is being defined as 50 to 60mbar through the described pressure decay after the effective cleaning procedure by described predetermined reference data, and described filter is being defined as 10 to 30mbar through the described pressure decay after the cleaning procedure not yet in effect by described predetermined reference data.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0104020A SE521186C2 (en) | 2001-11-30 | 2001-11-30 | Method and apparatus for testing the cleaning efficiency of a filter in a filter system |
| SE01040203 | 2001-11-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1596145A true CN1596145A (en) | 2005-03-16 |
| CN1262329C CN1262329C (en) | 2006-07-05 |
Family
ID=20286156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028236955A Expired - Fee Related CN1262329C (en) | 2001-11-30 | 2002-11-26 | A cleaning efficiency testing method and apparatus for a filter in a filtering system |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US7320760B2 (en) |
| EP (1) | EP1448289A1 (en) |
| JP (1) | JP4226475B2 (en) |
| CN (1) | CN1262329C (en) |
| AU (1) | AU2002353730A1 (en) |
| BR (1) | BR0214556A (en) |
| CA (1) | CA2467582A1 (en) |
| EA (1) | EA005732B1 (en) |
| MX (1) | MXPA04005154A (en) |
| SE (1) | SE521186C2 (en) |
| WO (1) | WO2003045530A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103100307A (en) * | 2013-03-05 | 2013-05-15 | 天津工业大学 | Characterization method of interface combination condition of enhancement type hollow fiber membrane |
| WO2018171026A1 (en) * | 2017-03-23 | 2018-09-27 | 天华化工机械及自动化研究设计院有限公司 | Test device and test method for rotary pressurized filter and method for designing filter |
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| KR100645500B1 (en) | 2005-05-27 | 2006-11-14 | 주식회사 한강엔지니어링 | Filtering apparatus for experiment |
| US20110059462A1 (en) * | 2006-02-21 | 2011-03-10 | University Of South Florida | Automated particulate concentration system |
| JP2011115712A (en) * | 2009-12-02 | 2011-06-16 | Mitsubishi Heavy Ind Ltd | Washing method of filter membrane |
| JP5612700B2 (en) * | 2009-12-11 | 2014-10-22 | エコラボ インコーポレイティド | Fouling detection mechanism and method for detecting fouling |
| AT511622B1 (en) * | 2011-07-08 | 2014-01-15 | Hirtenberger Ag | METHOD AND DEVICE FOR CLEANING FILTERS AND CATALYSTS |
| JP5751987B2 (en) * | 2011-08-25 | 2015-07-22 | 富士電機株式会社 | Scale suppression method and geothermal power generator |
| US20140202235A1 (en) * | 2013-01-24 | 2014-07-24 | Bha Altair, Llc | Cartridge filter robustness testing |
| JP6576062B2 (en) * | 2015-03-17 | 2019-09-18 | 株式会社クボタ | Separation membrane cleaning method for membrane separation apparatus |
| KR20230170829A (en) * | 2017-09-18 | 2023-12-19 | 에보쿠아 워터 테크놀로지스 엘엘씨 | Sand Filter LED Status Light |
| CN109331534A (en) * | 2018-12-06 | 2019-02-15 | 深圳市优点智联科技有限公司 | Water purifier water quality perspective method, water purifier, readable storage medium storing program for executing and system |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5645154A (en) | 1979-09-20 | 1981-04-24 | Kuraray Co Ltd | Concentration of milk |
| DE3001675A1 (en) * | 1980-01-18 | 1981-07-23 | Fichtel & Sachs Ag, 8720 Schweinfurt | DEVICE FOR DISPLAYING THE EXHAUST LEVEL OF AN ADSORPTION FILTER |
| DE3117399C2 (en) * | 1981-05-02 | 1983-02-10 | Bruno Ing.(grad.) 8931 Reichertshofen Huschke | Testing device for filters, in particular sterile filters |
| SE451791B (en) * | 1984-09-11 | 1987-11-02 | Alfa Laval Food & Dairy Eng | SET AND PLANT FOR PREPARING MILK WITH LOW BACTERIA CONTENT |
| GB8524972D0 (en) * | 1985-10-10 | 1985-11-13 | Atomic Energy Authority Uk | Liquid treatment |
| EP0280717A4 (en) * | 1986-09-04 | 1988-10-24 | Memtec Ltd | Cleaning of hollow fibre filters. |
| DE3836530A1 (en) * | 1988-10-27 | 1990-05-03 | Koch August G Maschinen | Method for operating a filter |
| US5252213A (en) * | 1989-06-20 | 1993-10-12 | University Of Washington | Dry dialysate composition |
| JPH0377630A (en) | 1989-08-16 | 1991-04-03 | Fuji Photo Film Co Ltd | Method for testing perfectness |
| DE4119040C2 (en) * | 1991-06-10 | 1997-01-02 | Pall Corp | Method and device for testing the operating state of filter elements |
| US5256437A (en) * | 1992-06-19 | 1993-10-26 | Pall Corporation | Product and process of making sterile milk through dynamic microfiltration |
| US5356651A (en) | 1992-12-30 | 1994-10-18 | Pall Corporation | Manufacturing method for producing sterile milk using dynamic microfiltration |
| SE508869C2 (en) | 1997-03-14 | 1998-11-09 | Tetra Laval Holdings & Finance | Method for producing UHT milk with improved taste properties |
| SE519853E (en) | 1997-06-19 | 2005-03-29 | Tetra Laval Holdings & Finance | Method of making sterile skim milk |
| US5783245A (en) * | 1997-04-17 | 1998-07-21 | Apv Crepaco, Inc. | Method and apparatus for processing dairy product |
| JP2001120966A (en) | 1999-10-25 | 2001-05-08 | Toshiba Corp | Membrane filter system |
-
2001
- 2001-11-30 SE SE0104020A patent/SE521186C2/en not_active IP Right Cessation
-
2002
- 2002-11-26 BR BR0214556-1A patent/BR0214556A/en not_active Application Discontinuation
- 2002-11-26 AU AU2002353730A patent/AU2002353730A1/en not_active Abandoned
- 2002-11-26 US US10/496,672 patent/US7320760B2/en not_active Expired - Fee Related
- 2002-11-26 MX MXPA04005154A patent/MXPA04005154A/en active IP Right Grant
- 2002-11-26 EP EP02789106A patent/EP1448289A1/en not_active Withdrawn
- 2002-11-26 JP JP2003547024A patent/JP4226475B2/en not_active Expired - Fee Related
- 2002-11-26 CA CA002467582A patent/CA2467582A1/en not_active Abandoned
- 2002-11-26 EA EA200400750A patent/EA005732B1/en not_active IP Right Cessation
- 2002-11-26 CN CNB028236955A patent/CN1262329C/en not_active Expired - Fee Related
- 2002-11-26 WO PCT/SE2002/002162 patent/WO2003045530A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103100307A (en) * | 2013-03-05 | 2013-05-15 | 天津工业大学 | Characterization method of interface combination condition of enhancement type hollow fiber membrane |
| WO2018171026A1 (en) * | 2017-03-23 | 2018-09-27 | 天华化工机械及自动化研究设计院有限公司 | Test device and test method for rotary pressurized filter and method for designing filter |
| US11099114B2 (en) | 2017-03-23 | 2021-08-24 | Tianhua Institute of Chemical Machinery and Automation Co., Ltd | Test device and test method for rotary pressurized filter and method for designing filter |
Also Published As
| Publication number | Publication date |
|---|---|
| MXPA04005154A (en) | 2005-02-17 |
| US7320760B2 (en) | 2008-01-22 |
| JP2005510343A (en) | 2005-04-21 |
| JP4226475B2 (en) | 2009-02-18 |
| WO2003045530A1 (en) | 2003-06-05 |
| CA2467582A1 (en) | 2003-06-05 |
| EA200400750A1 (en) | 2004-12-30 |
| CN1262329C (en) | 2006-07-05 |
| SE0104020L (en) | 2003-05-31 |
| AU2002353730A1 (en) | 2003-06-10 |
| EP1448289A1 (en) | 2004-08-25 |
| SE521186C2 (en) | 2003-10-07 |
| EA005732B1 (en) | 2005-06-30 |
| BR0214556A (en) | 2004-11-09 |
| US20050000894A1 (en) | 2005-01-06 |
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